vdpau: add I422 and NV16

This is untested due to lack of adequate hardware.

modules/hw/vdpau/chroma.c

@@ -330,7 +330,8 @@ static picture_t *VideoExport(filter_t *filter, picture_t *src, picture_t *dst)
         planes[i] = dst->p[i].p_pixels;
         pitches[i] = dst->p[i].i_pitch;
     }
-    if (dst->format.i_chroma == VLC_CODEC_I420)
+    if (dst->format.i_chroma == VLC_CODEC_I420
+     || dst->format.i_chroma == VLC_CODEC_I422)
     {
         planes[1] = dst->p[2].p_pixels;
         planes[2] = dst->p[1].p_pixels;
@@ -601,6 +602,7 @@ static int OutputOpen(vlc_object_t *obj)
     if (filter->fmt_in.video.i_chroma == VLC_CODEC_VDPAU_VIDEO_422)
     {
         sys->chroma = VDP_CHROMA_TYPE_422;
+        /* TODO: check if the drivery supports NV12 or UYVY */
         sys->format = VDP_YCBCR_FORMAT_UYVY;
         sys->import = VideoPassthrough;
     }

modules/hw/vdpau/vlc_vdpau.h

@@ -225,6 +225,14 @@ bool vlc_fourcc_to_vdp_ycc(vlc_fourcc_t fourcc,
             *type = VDP_CHROMA_TYPE_420;
             *format = VDP_YCBCR_FORMAT_NV12;
             break;
+        case VLC_CODEC_I422:
+            *type = VDP_CHROMA_TYPE_422;
+            *format = VDP_YCBCR_FORMAT_YV12;
+            break;
+        case VLC_CODEC_NV16:
+            *type = VDP_CHROMA_TYPE_422;
+            *format = VDP_YCBCR_FORMAT_NV12;
+            break;
         case VLC_CODEC_YUYV:
             *type = VDP_CHROMA_TYPE_422;
             *format = VDP_YCBCR_FORMAT_YUYV;